Portion of a shoe upper



FIG. 1 is a front perspective view of a portion of a shoe upper showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is a top plan view thereof.

The area within the solid and dot-dash-dot lines forms the claimed design. The area within the broken lines is environmental and forms no part of the claimed design. 

The ornamental design for a portion of a shoe upper, as shown and described. 